We will tear down the existing environment in this exercise and rebuild it from scratch
The existing docker images in this environment are as follows:
[root@centos ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
10.0.2.15:4000/kolla/centos-source-neutron-lbaas-agent 4.0.0 0d851398789f 6 hours ago 974.4 MB
10.0.2.15:4000/kolla/centos-source-bifrost-deploy 4.0.0 b9b443c7eb21 6 hours ago 1.737 GB
10.0.2.15:4000/kolla/centos-source-neutron-vpnaas-agent 4.0.0 2ad7d337a1e1 6 hours ago 996.8 MB
10.0.2.15:4000/kolla/centos-source-neutron-server 4.0.0 6526dadd36a1 6 hours ago 973.3 MB
10.0.2.15:4000/kolla/centos-source-neutron-sfc-agent 4.0.0 7ce97ab906fb 6 hours ago 948.8 MB
10.0.2.15:4000/kolla/centos-source-neutron-linuxbridge-agent 4.0.0 f0072f1199a7 6 hours ago 969.1 MB
10.0.2.15:4000/kolla/centos-source-glance-api 4.0.0 ddf26e1a92f1 6 hours ago 917.6 MB
10.0.2.15:4000/kolla/centos-source-neutron-bgp-dragent 4.0.0 e038070db079 6 hours ago 946.7 MB
10.0.2.15:4000/kolla/centos-source-ironic-conductor 4.0.0 4d36d0dbe809 6 hours ago 1.032 GB
10.0.2.15:4000/kolla/centos-source-neutron-dhcp-agent 4.0.0 ad3159a35d55 6 hours ago 945.3 MB
10.0.2.15:4000/kolla/centos-source-neutron-l3-agent 4.0.0 ad3159a35d55 6 hours ago 945.3 MB
10.0.2.15:4000/kolla/centos-source-neutron-metadata-agent 4.0.0 ad3159a35d55 6 hours ago 945.3 MB
10.0.2.15:4000/kolla/centos-source-neutron-metering-agent 4.0.0 ad3159a35d55 6 hours ago 945.3 MB
10.0.2.15:4000/kolla/centos-source-neutron-openvswitch-agent 4.0.0 c837b9ff5f52 6 hours ago 945.3 MB
10.0.2.15:4000/kolla/centos-source-mistral-api 4.0.0 c54a2ca4091f 6 hours ago 819.7 MB
...
10.0.2.15:4000/kolla/centos-source-base 4.0.0 913ffa2be03a 7 hours ago 398.4 MB
docker.io/centos 7 a8493f5f50ff 3 weeks ago 192.5 MB
docker.io/registry 2 136c8b16df20 3 weeks ago 33.17 MB
[root@centos ~]#
The most important file for building the kolla ansible environment is the globals.yaml. We are keeping most of the variables with its default value and making changes to those that are environment specific.
We need to make sure that we are pointing to the docker registry that we set up on our node and that we are assigning an unused IP as the internal VIP address. We are using source build in this example (default for CentOS is binary).
The instructions for setting up the docker registry can be found at the official Kolla document link
The network_interface is the interface where all the API services will be bound to by default. All the vxlan/tunnel and storage network traffic will pass through that as well. It is enp0s3 in our case.
The neutron_external_interface is the interface given to neutron as its external network port and should not have an IP assigned to it. It is enp0s8 in our case.
We have enabled Cinder and LVM as our cinder volume in this environment. The services are disabled by default and should be turned on for our case.
vi /etc/kolla/globals.yml
---
kolla_install_type: "source"
openstack_release: "4.0.0"
kolla_internal_vip_address: "10.0.2.250"
docker_registry: "10.0.2.15:4000"
network_interface: "enp0s3"
neutron_external_interface: "enp0s8"
enable_cinder: "yes"
enable_cinder_backend_iscsi: "yes"
enable_cinder_backend_lvm: "yes"
cinder_volume_group: "cinder-volumes"
The next thing that we need to check will be the passwords.yaml. It is
locate at /etc/kolla/passwords.yml. All the passwords should be populated
in this file. Deployment engineers can change the passwords prior to the
deployment. The file has already been generated in our case. The command to
generate random passwords is as follows:
kolla-genpwd
Further information can also be found at the official Kolla Ansible documentation link
We are now ready to tear down our environment
Execute the following commands from /opt folder to clean up the containers
and host configuration files (Do not delete any of the docker images as it
will take time to download them again)
Make sure that you do not have any active VMs in the environment before executing the clean up scripts
kolla-ansible/tools/cleanup-containers
kolla-ansible/tools/cleanup-host
The output should look similar to this
[root@centos opt]# kolla-ansible/tools/cleanup-containers
Removing ovs bridge...
Guru meditation now registers SIGUSR1 and SIGUSR2 by default for backward compatibility. SIGUSR1 will no longer be registered in a future release, so please use SIGUSR2 to generate reports.
Stopping containers...
Removing containers...
Removing volumes...
All cleaned up!
[root@centos opt]#
[root@centos opt]#
[root@centos opt]# kolla-ansible/tools/cleanup-host
Creating a fstab backup...
Unmounting Ceph OSD disks
Removing ceph references from fstab...
Getting folders name...
removed ‘/etc/kolla/cinder-api/config.json’
removed ‘/etc/kolla/cinder-api/cinder.conf’
removed directory: ‘/etc/kolla/cinder-api’
removed ‘/etc/kolla/cinder-backup/config.json’
...
removed directory: ‘/etc/kolla/rabbitmq’
removed ‘/etc/kolla/tgtd/config.json’
removed directory: ‘/etc/kolla/tgtd’
[root@centos opt]#
Check that only the registry docker container is left in the environment
[root@centos opt]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
cb9f7e51bc7b registry:2 "/entrypoint.sh /etc/" 7 days ago Up 3 minutes 0.0.0.0:4000->5000/tcp registry
[root@centos opt]#
Execute pre-check scripts
kolla-ansible prechecks -i /opt/all-in-one
Start Deployment
kolla-ansible deploy -i /opt/all-in-one
Deployment time is dependent on the underlying host and will vary between individuals.
The end result will look similar to the following:
...
PLAY RECAP *************************************************************************************************************************************************************************************************
localhost : ok=251 changed=153 unreachable=0 failed=0
Execute the following commands under /opt folder:
source admin-openrc.sh
./init-runonce
Make use of the output of init-runonce to create a demo VM
The end result will look similar to the following:
[root@centos opt]# openstack server create \
> --image cirros \
> --flavor m1.tiny \
> --key-name mykey \
> --nic net-id=0c7de303-7d23-44a7-a2d7-e28bfffe5b87 \
> demo1
+-------------------------------------+-----------------------------------------------+
| Field | Value |
+-------------------------------------+-----------------------------------------------+
| OS-DCF:diskConfig | MANUAL |
| OS-EXT-AZ:availability_zone | |
| OS-EXT-SRV-ATTR:host | None |
| OS-EXT-SRV-ATTR:hypervisor_hostname | None |
| OS-EXT-SRV-ATTR:instance_name | |
| OS-EXT-STS:power_state | NOSTATE |
| OS-EXT-STS:task_state | scheduling |
| OS-EXT-STS:vm_state | building |
| OS-SRV-USG:launched_at | None |
| OS-SRV-USG:terminated_at | None |
| accessIPv4 | |
| accessIPv6 | |
| addresses | |
| adminPass | H93CyC8otetQ |
| config_drive | |
| created | 2017-05-07T03:51:46Z |
| flavor | m1.tiny (1) |
| hostId | |
| id | b9823dd2-4718-4f44-96e2-fa9aa4664808 |
| image | cirros (6b8aec48-87da-4c4a-b6bd-68628c1e8630) |
| key_name | mykey |
| name | demo1 |
| progress | 0 |
| project_id | 1ddf226f081f4e879e3c2555cac880bd |
| properties | |
| security_groups | name='default' |
| status | BUILD |
| updated | 2017-05-07T03:51:46Z |
| user_id | 11a97488e81942388b586e744d4c5f81 |
| volumes_attached | |
+-------------------------------------+-----------------------------------------------+
[root@centos opt]# nova list
+--------------------------------------+-------+--------+------------+-------------+-------------------+
| ID | Name | Status | Task State | Power State | Networks |
+--------------------------------------+-------+--------+------------+-------------+-------------------+
| b9823dd2-4718-4f44-96e2-fa9aa4664808 | demo1 | ACTIVE | - | Running | demo-net=10.0.0.7 |
+--------------------------------------+-------+--------+------------+-------------+-------------------+
[root@centos opt]#
At this point in time we have successfully deployed the all-in-one (AIO) environment from scratch using Kolla Ansible 😄